The units of an item available for sale during the year were as follows: Jan. 1 Inventory 1,000 units at $120
Feb. 17 Purchases 1,375 units at $128
July 21 Purchases 1,500 units at $136
Nov. 23 Purchases 1,125 units at $140
There are 1,200 units of the item in the physical inventory at December 31. The Inventony periodic inventory system is used.
a. Determine the inventory cost by the first-in, first-out method.
b. Determine the inventory cost by the last-in, first-out method.
c. Determine the inventory cost by the weighted average cost method.

                             FIFO            LIFO              Weighted Average

Inventory cost =  $167,700      $145,600     $157,800

Explanation:

a) Data and Calculations:

Jan. 1       Inventory     1,000 units at $120  $120,000     $120,000

Feb. 17    Purchases    1,375 units at $128     176,000      296,000

July 21    Purchases    1,500 units at $136    204,000      500,000

Nov. 23  Purchases     1,125 units at $140     157,500      657,500

Dec. 31   Total units   5,000                        $657,500

Dec. 31   Inventory      1,200

Dec. 31   Units sold    3,800

Inventory cost by:

FIFO ( first-in, first-out method)

July 21    Purchases         75 units at $136  $10,200

Nov. 23  Purchases     1,125 units at $140   157,500

Dec. 31   Inventory      1,200                       $167,700

LIFO (last-in, first-out method)

Jan. 1       Inventory     1,000 units at $120   $120,000

Feb. 17    Purchases      200 units at $128      25,600

Dec. 31   Inventory      1,200                       $145,600

Weighted-Average Cost Method

Total cost of goods available/Total units available  for sale

= $657,500/5,000

= $131.50 per unit

Inventory cost = $157,800 ($131.50 * 1,200)

riley- $3

sean- $4

jake- $8

riley has the absolute advantage.